Lumentum makes optical components and lasers used in telecommunications networks, data center interconnects and industrial and consumer applications, supplying the physical hardware that moves data as light through fiber optic cables. Its optical components are essential building blocks inside the networking equipment that telecom carriers and cloud data center operators use to move increasing volumes of internet traffic. Growing demand for AI computing has increased the need for high-speed optical connections between servers inside data centers, since AI workloads require moving enormous amounts of data between machines working together on the same task. Lumentum also supplies laser components used in industrial cutting and welding applications and in some consumer electronics, giving it some diversification beyond its core telecom and data center optical networking business.